Lord Adhesives Circalok™ 6412 Urethane Encapsulant System

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Lord Adhesives Circalok™ 6412 Urethane Encapsulant System
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Adhesive
Material Notes:	LORD Circalok™ 6412 urethane encapsulant is a two-component system designed for encapsulating and casting applications. Circalok 6412 encapsulant cures at room temperature to produce a flexible, medium durometer system without containing MOCA or TDI. Circalok 6412 B hardener may crystallize during storage. If crystals appear, loosen container lid and warm hardener at 32-49°C to melt crystals before mixing with resin. After opening Circalok 6412 B hardener, protect material from excessive moisture by installing desiccant cartridges and/or using dry nitrogen as an inert cover. Features: maintains low viscosity for complete and void-free encapsulation. exhibits excellent hydrolytic stability and low moisture absorption. provides excellent electrical insulation properties. can be used on parts and devices that experience operating temperatures from -50 to +100°C. All information provided by Lord.
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Physical Properties	Original Value	Comments

Specific Gravity	1.02 g/cc	6412 A Resin
	1.08 g/cc	Mixed
	1.23 g/cc	6412 B Hardener

Mechanical Properties	Original Value	Comments
Hardness, Shore A	60	cured
Tensile Strength	10.34 psi @Temperature 25.0 °C	cured
Elongation at Break	275 %	cured

Electrical Properties	Original Value	Comments
Volume Resistivity	3.80e+11 ohm-cm @Temperature 25.0 °C	cured
Dielectric Constant	6.2 @Frequency 1000 Hz, Temperature 25.0 °C	cured
Dielectric Strength	485 V/mil	cured
Dissipation Factor	0.027 @Frequency 1000 Hz, Temperature 25.0 °C	cured

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	212 °F
Minimum Service Temperature, Air	-50.0 °C

Processing Properties	Original Value	Comments
Working Life	30.0 min @Temperature 25.0 °C	Mixed
Shelf Life	6.00 Month @Temperature 25.0 °C	each component from date of manufacture

Descriptive Properties
Appearance	Amber Liquid	6412 B Hardener
	Amber or Black Paste	Mixed
	Cream or Black Liquid	6412 A Resin

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PLORD9268 / 232624

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